1986 Liberty Trade Silver – Statue of Liberty Centennial – 1 Troy Oz. This is the Mexican Mint / Casa de Moneda de México issue and contains one full Troy ounce of. The round features a detailed proof-style Statue of Liberty design with mirrored fields. What makes this example especially desirable is that it remains a complete original presentation set, including. 1986 Liberty Trade Silver 1 Troy Oz silver round.. 9999 fine silver, mined and refined in Mexico. This limited edition was specially commissioned by Manfra, Tordella & Brookes, Inc. (MTB), New York, to commemorate the centennial of the Statue of Liberty. The silver round displays very nicely. Please examine all photographs carefully, as they are part of the description and show the exact piece, capsule, presentation case, certificate, paperwork, and outer box you will receive. A great piece for a silver bullion collector, Statue of Liberty collector, Mexican Mint collector, MTB collector, or collector of 1980s commemorative silver.